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2 Sheets-Sheet 1.

(No Model.)

J. E. T. BARTLETT.

STEAM GENERATOR.

N0. 426,614. Patented Apr. 29, 1890.

WITNESSES:

m: moms PETERS cm, morwu'mo WASHINGTON, n. c.

2 Sheets-Sheet 2,

1%v Model.)

J. E. T. BARTLETT.

STEAM GENERATOR.

No. 426,6l4-f Patented A r. 29, 1890.

l/VVE/VTOR 35. 14m Y WITNESSES:

ATTORNEY.

' wanted in the generator.

Unrrnn Sterne ATENT Orricni JOHN EDMUND TRENOUTl-I BARTLETT, OF NEYV YORK, N. Y.

STEAM-GENERATOR.

SPECIFICATION forming part of Letters Patent No. 426,614, dated April 29, 1890.

Application filed September 2, 1389- fierial No. 322,784' (No model.)

To all whom it may concern;

Be it known that 1, JOHN EDMUND TREN- OUTH BARTLETT, a citizen of the United States, residing at New York city, in the county of New York and State of New York, have invented a new and useful Form of Steam-Generator, fully described and represented in the following specification and accompanying drawings,forming a part of the same.

My invention relates to the improvement of the apparatus used in the evaporation of liquid and the development of vapor for the use of engines and other purposes; and the obects of my improvements are, first, to provide a flame-chamber of sufficient volume to permit the products of combustion to so combine before being cooled by contact with the surface of the generator as to insure perfectcombustion; second, to so arrange. the heating-surface that the products of combustion may wipe said surface and not be subdivided into streams so small as to interrupt the process of combustion before complete mingling of the gases from the fuel and air supply have had time to completely convert the carbonic product of distillation into car homo-acid gas; third, to so expose the liquid to be evaporated that the hydraulic mean depth is as low as is safe, and so that the flow of liquid and delivery of steam are in the same direction; fourth, to so deliver the feed- .tluid that it will induce a current and at the same time deposit any foreign substance that may be entrained in the supply-fluid not I attain these objects by constructing the generator as illustrated in the accompanying drawings, in which- Figure 1 is an elevation of the front, showing a transverse vertical section of one-half, and Fig. 2 is a longitudinal vertical section.

Similar symbols refer to similar parts throughout the specification and accompanying drawings.

The grate-surface a may be constructed on any approved method, With the ash-pit b below, and may be constructed to suit the location or requirements for any special use such as marine, stationary, or portable--and incased in such refractory material as is necessary or convenient. An upper chamber a is made, as shown, at an angle or curved to any suitable radius converging toward the center, when there are to be two wing-chambers (Z, and connected to the wing chambers or chamber by means of tubes 0, extending from the under side of the upper chamber to the top side of the win g-cha mbcr, these tubes to be of such length, number, and diameter as is necessary to supply the necessary amount of heating-surface and area for passage of fluid. Tubes f of suitable diameter are secured in a suitable manner to the top sheet of the upper chamber and bottom sheet of the lower chamber eccentric or concentric to the outside tube, as may be deemed advisable, by means of a special detail that will admit of the large tube being set in position and properly secured I the main chamber 0 a sufficient number of pipes g are arranged to readily carry off the vapor to the enlarged steam-pipe h, which may be simply a steam-pipe or a steam-receiver, as shown on the drawings. A perforated pipe k of suitable size to supply steam for the purpose required is shown in this case. Inside of the receiver a shield ordeflecting-plate Z is shown, as usually employed, to deflect the entrained liquid' and separate it from the vapor. The products of combustion are induced by forced or natural draft to pass between and around outside ofthe large tubes, and are then deflected by the side of the boiler-casing under the wingchamber and up through the inside of the small tubes f, and thence out at the funnel or chimney in the usual manner.

The feed of liquid is accomplished in the following manner: The supply from the pump or other source is admitted through the pipe on, extending concentrically through the return-pipe n to the enlarged chamber 0, when the current is reduced in speed in the proportion to the relative areas of the feed-pipe and enlarged chamber. The object of this enlargement of the chamber 0 is to induce or permit any foreign substanccsuoh as salt, mud, grease, &c.-to separate and deposit or accumulate in the receivers 19 and q in the following manner, viz: The liquid containing the impurities in passing through. the pipe m is heated to the boilingpoint, re-

ceiving heat through the surrounding liquid in the pipe n, which is heated by the gases in the uptake by which it is surrounded. As the liquid passes out of the inner end of the feed-pipe n, it has a much larger area to flow through, and its velocity may be reduced to any required flow per minute. Therefore any heavy substance will be permitted to deposit or drop into the chamber 19, and substances lighter than water will float or rise intothe chamber q, whence they may be blown off through suitable blow-off pipes and cocks at intervals of time or continuously by regulating the cooks to the suitable size opening necessary. The feed of liquid passes from the back of the halite-plate or strainer r through suitable openings to the pipe 11, and thence through the annular space between the two pipes 172 and n into the chambers, and down through the pipe t, which discharges into the return-connection u, arranged to properly distribute the feed to the wingchambers dd. The liquid entrained with the vapor and deposited in the separator h will flow up into the nozzle 2 situated near the bottom of the inside of the receiver, (there may be one or more of these at each end of the receiver, if necessary,) out into return-connection to. These return-connections are arranged to deliver the fluid into the wingchambers by means of a suitable number of connections to properly distribute the fluid, so that there is no danger of the wing-cha1nbers being emptied of fluid, no matter how rapid the circulation may be, as a current downward will always be induced and maintained through said return-Connections from the receiver and main chamber downward into said win g-chainbers by the upward tendency of the heated fluid and vapor through the annular conduits between the wing-chambers and upper chamber.

The method of firing may be of any approved form, and the fire-box arranged to suit such system as may be used. The staying and stiffening of the different parts of the generator are to be of anyapproved or suitable form necessary to produce the strength required, and are not of any special construction needing description, but are to be made to the requirements of the law governing steam-boilers.

What I claim as my invention, and desire to secure by Letters Patent, is 1. The combination, in a steam-generator, of the upper-chamber 0, arranged with sides sloping toward the longitudinal central vertical plane and extending longitudinally over the grate-surface a, and connected by means of annular tubes or pipes e f to two wingchambers d d, arranged one on each side of the grate-surface a, and extending longitudinally with said grate-surface and supported on the side walls to w, the upper chamber 0 connected by means of series of tubes or pipes g to the steam pipe or receiver h, substantially as set forth.

2. The combination, in a steam-generator, of a longitudinal supply-pipe m, passing longiludinally through a return-pipe it into an enlarged chamber 0, arranged withreceivers p and q, and battle-plate '7', connected by means of a return-pipe n to a chamber 8, having a branch pipe 75 for directing the flow of feed, substantially as described.

JOHN EDMUND TRENOUTH BARTLETT.

Witnesses:

WVALFRID SYLVEN, A. MAOOAFFERTY. 

